BACKGROUND: On rare occasions, a lesion preoperatively diagnosed as a lipoma is ultimately diagnosed as a liposarcoma. It is important to differentiate liposarcomas from lipomas preoperatively. OBJECTIVE: To examine characteristic features of liposarcomas preoperatively diagnosed as lipomas. METHODS: Patients (n = 637) who underwent resection of tumors preoperatively diagnosed as lipomas from January 2006 to October 2016 were retrospectively reviewed. RESULTS: Based on pathological examination, 8 of 637 lesions were diagnosed as liposarcomas postoperatively. All the liposarcomas were well-differentiated liposarcomas. The rate of male patients was higher (87.5% vs 38.9%) and the size of tumors was larger (8.75 vs 4.64 cm) in these cases than in accurately diagnosed lipoma cases. On imaging, nonfatty septa were more frequently observed (71.4% vs 20.0%) and were thicker (2.22 vs 1.33 mm) than in true lipoma cases. CONCLUSION: If the patient with a lipomatous tumor is male and the tumor is large, we should consider the possibility of it being a liposarcoma. A thick internal septum in the image findings is a good predictor of malignancy.
BACKGROUND: On rare occasions, a lesion preoperatively diagnosed as a lipoma is ultimately diagnosed as a liposarcoma. It is important to differentiate liposarcomas from lipomas preoperatively. OBJECTIVE: To examine characteristic features of liposarcomas preoperatively diagnosed as lipomas. METHODS:Patients (n = 637) who underwent resection of tumors preoperatively diagnosed as lipomas from January 2006 to October 2016 were retrospectively reviewed. RESULTS: Based on pathological examination, 8 of 637 lesions were diagnosed as liposarcomas postoperatively. All the liposarcomas were well-differentiated liposarcomas. The rate of male patients was higher (87.5% vs 38.9%) and the size of tumors was larger (8.75 vs 4.64 cm) in these cases than in accurately diagnosed lipoma cases. On imaging, nonfatty septa were more frequently observed (71.4% vs 20.0%) and were thicker (2.22 vs 1.33 mm) than in true lipoma cases. CONCLUSION: If the patient with a lipomatous tumor is male and the tumor is large, we should consider the possibility of it being a liposarcoma. A thick internal septum in the image findings is a good predictor of malignancy.
Authors: Tobias M Ballhause; Sebastian Weiss; Alonja Reiter; Karl-Heinz Frosch; Andreas M Luebke; Peter Bannas; Carsten W Schlickewei; Matthias H Priemel Journal: World J Surg Oncol Date: 2022-06-08 Impact factor: 3.253
Authors: Tobias M Ballhause; Alexander Korthaus; Martin Jahnke; Karl-Heinz Frosch; Jin Yamamura; Tobias Dust; Carsten W Schlickewei; Matthias H Priemel Journal: Diagnostics (Basel) Date: 2022-05-21
Authors: Sebastian Weiss; Alexander Korthaus; Nora Baumann; Jin Yamamura; Alexander S Spiro; Andreas M Lübke; Karl-Heinz Frosch; Carsten Schlickewei; Matthias Priemel Journal: Diagnostics (Basel) Date: 2021-04-14